Finding the Fourth Proportional to 1,981.34, 2,970.03 and 681.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.34 : 2,970.03 = 681.92 : x
2. Step 2: Convert to fraction form
   1,981.34/2,970.03 = 681.92/x
3. Step 3: Cross multiply
   1,981.34x = 2,970.03 × 681.92
4. Step 4: Simplify right side
   1,981.34x = 2,025,322.86
5. Step 5: Solve for x
   x = 2,025,322.86/1,981.34
6. Step 6: Final answer
   x = 1,022.20